Clear the cache of this page?
Cache-files are temporary copies of a page.
When you request a page here, the software creates from the source text each time a new page that can be sent to your browser. Because of technical limitations, the created pages are cached, or temporarily saved. Thus, when a user requests a page that has been viewed before, the saved copy will appear instead of the updated page.
Purging a page clears the cache and forces the most current version to appear.